South Dakota weather in May: Statewide normals and every place, NOAA 1991-2020
In May, South Dakota's statewide normal high is 68°F and normal low 43°F; normal highs run from 60°F in Custer to 73°F in Wagner (NOAA 1991-2020 normals).
- Statewide normal high
- 68°FMay, 1991-2020
- Statewide normal low
- 43°FMay, 1991-2020
- Statewide normal precipitation
- 3.32 inMay
- Warmest place
- 73°Fnormal high, Wagner
- Coolest place
- 60°Fnormal high, Custer
Where is South Dakota warmest and wettest in May?
Wagner has the warmest May afternoons (73°F) and Custer the coolest (60°F). Lead gets the most precipitation (4.90 in) and Buffalo the least (2.47 in). The most snow falls in Lead (6.7 inches).
Statewide, May averaged 55.0°F in 2021, 55.4°F in 2022, 61.2°F in 2023, 56.5°F in 2024, 57.0°F in 2025, 57.3°F in 2026, against a 1991-2020 normal of 55.9°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Sioux Falls | 71°F | 48°F | 3.86 | 0.1 |
| Rapid City | 67°F | 42°F | 3.45 | 1.5 |
| Aberdeen | 70°F | 44°F | 3.28 | 0.0 |
| Brookings | 67°F | 45°F | 3.45 | 0.1 |
| Watertown | 67°F | 45°F | 2.87 | 0.1 |
| Yankton | 72°F | 48°F | 3.68 | 0.2 |
| Mitchell | 71°F | 48°F | 3.15 | – |
| Huron | 70°F | 46°F | 3.15 | 0.0 |
| Spearfish | 64°F | 42°F | 3.72 | 2.3 |
| Pierre | 70°F | 45°F | 3.25 | 0.0 |
| Vermillion | 73°F | 48°F | 3.96 | – |
| Madison | 68°F | 46°F | 3.74 | 0.1 |
| Belle Fourche | 69°F | 44°F | 3.04 | 1.3 |
| Hot Springs | 70°F | 41°F | 3.28 | 0.4 |
| Milbank | 67°F | 45°F | 2.89 | – |
| Mobridge | 70°F | 45°F | 2.94 | 0.0 |
| Lead | 63°F | 41°F | 4.90 | 6.7 |
| Canton | 70°F | 47°F | 4.08 | 0.1 |
| Winner | 71°F | 47°F | 3.39 | – |
| Pine Ridge | 69°F | 42°F | 2.62 | – |
| Chamberlain | 70°F | 47°F | 3.19 | – |
| Sisseton | 69°F | 45°F | 2.79 | 0.0 |
| Flandreau | 67°F | 45°F | 4.12 | 0.1 |
| Redfield | 69°F | 44°F | 3.34 | – |
| Custer | 60°F | 38°F | 2.97 | – |
| Webster | 66°F | 45°F | 3.39 | 0.0 |
| Oglala | 69°F | 44°F | – | – |
| Kyle | 69°F | 42°F | 3.56 | – |
| Wagner | 73°F | 49°F | 3.75 | – |
| Deadwood | 65°F | 39°F | – | – |
| Salem | 70°F | 45°F | 3.80 | – |
| Miller | 68°F | 45°F | 3.51 | 0.0 |
| Gregory | 69°F | 45°F | 4.13 | 0.0 |
| Clear Lake | 66°F | 44°F | 3.42 | 0.2 |
| Britton | 68°F | 43°F | 3.04 | 0.0 |
| Clark | 67°F | 45°F | 3.10 | – |
| Lemmon | 69°F | 43°F | 2.84 | 0.7 |
| Mission | 68°F | 44°F | 3.38 | 0.1 |
| Tyndall | 70°F | 47°F | 3.96 | 0.2 |
| Gettysburg | 68°F | 44°F | 3.03 | 0.3 |
| De Smet | 67°F | 45°F | 3.32 | 0.0 |
| Centerville | 70°F | 47°F | 3.87 | 0.1 |
| Hill City | 65°F | 37°F | 4.15 | 4.1 |
| Ipswich | 69°F | 44°F | 2.99 | 0.0 |
| Arlington | 69°F | 46°F | 3.97 | – |
| Martin | 69°F | 42°F | 3.33 | 1.8 |
| Howard | 73°F | 45°F | 3.88 | 0.0 |
| Faulkton | 68°F | 44°F | 3.24 | 0.0 |
| Wessington Springs | 68°F | 46°F | 3.67 | 0.0 |
| Edgemont | 69°F | 38°F | 2.65 | 1.0 |
| Eureka | 67°F | 42°F | 3.18 | 0.0 |
| Philip | 70°F | 43°F | 2.96 | – |
| Castlewood | 67°F | 44°F | 3.18 | – |
| Armour | 73°F | 46°F | 4.03 | 0.0 |
| Johnson Siding | 64°F | 39°F | 4.21 | – |
| Alexandria | 69°F | 44°F | 3.64 | 0.0 |
| Highmore | 70°F | 44°F | 3.69 | 0.0 |
| Onida | 69°F | 45°F | 3.17 | 0.1 |
| Menno | 73°F | 48°F | 3.41 | 0.3 |
| Selby | 67°F | 44°F | 2.82 | 0.2 |
| Newell | 66°F | 43°F | 3.16 | 1.1 |
| Timber Lake | 69°F | 43°F | 2.90 | 0.6 |
| Bridgewater | 69°F | 47°F | 3.97 | – |
| Dupree | 72°F | 44°F | 3.27 | 0.5 |
| Waubay | 68°F | 47°F | 2.93 | 0.0 |
| Presho | 69°F | 42°F | – | – |
| Murdo | 68°F | 46°F | 3.44 | 0.0 |
| Montrose | 69°F | 45°F | – | – |
| Wilmot | 68°F | 45°F | 2.89 | 0.0 |
| Leola | 68°F | 43°F | 3.15 | – |
| White Lake | 69°F | 46°F | 3.72 | 0.0 |
| Faith | 67°F | 43°F | 3.20 | – |
| Buffalo | 66°F | 42°F | 2.47 | – |
| Bison | 68°F | 43°F | 3.11 | 0.7 |
| Kennebec | 72°F | 45°F | 3.29 | 0.0 |
| Roscoe | 67°F | 43°F | 3.16 | 0.1 |
| Summit | 68°F | 43°F | 3.16 | 0.1 |
| Bonesteel | 69°F | 45°F | 4.30 | 0.0 |
| Pickstown | 70°F | 47°F | 4.03 | 0.0 |
| Pollock | 70°F | 44°F | 2.77 | 0.2 |
| Mellette | 69°F | 43°F | 3.34 | 0.0 |
| Wentworth | 70°F | 47°F | 3.52 | 0.0 |
| Columbia | 68°F | 45°F | 3.41 | 0.0 |
| Conde | 68°F | 44°F | 2.83 | 0.0 |
| Astoria | 65°F | 44°F | – | – |
| Oelrichs | 69°F | 41°F | 3.25 | 0.3 |
| Midland | 71°F | 44°F | – | – |
| Andover | 68°F | 46°F | 3.19 | – |
| Camp Crook | 69°F | 42°F | 2.87 | 2.1 |
| Interior | 72°F | 46°F | 3.62 | 0.5 |
| Wasta | 70°F | 44°F | 3.55 | 0.1 |
| Turton | 69°F | 45°F | 3.23 | – |
| Wood | 69°F | 44°F | 3.36 | 0.0 |
| Forestburg | 71°F | 44°F | 3.58 | 0.0 |
| Winfred | 68°F | 45°F | 3.72 | – |
| Oral | 69°F | 41°F | 3.30 | 1.2 |
| Cottonwood | 68°F | 42°F | 2.90 | 0.4 |
| Stephan | 68°F | 43°F | 3.18 | 0.0 |
| Gann Valley | 70°F | 44°F | 3.35 | 0.0 |
| Aberdeen (35 mi WNW) | 66°F | 43°F | 2.92 | – |
| Academy (2 mi NE) | 69°F | 47°F | 3.53 | 0.0 |
| Antelope Ranger Station | 66°F | 40°F | – | – |
| Ardmore | 71°F | 41°F | 2.96 | 1.0 |
| Bear Ridge | 67°F | 40°F | 3.89 | 4.6 |
| Cedar Butte | 70°F | 45°F | 3.44 | 0.4 |
| Elm Springs (3 mi ESE) | 68°F | 43°F | 3.89 | 0.8 |
| Fort Meade | 67°F | 44°F | 4.44 | 1.4 |
| Fort Pierre (17 mi WSW) | 71°F | 45°F | 2.93 | 0.1 |
| Glad Valley (2 mi W) | 66°F | 43°F | 2.94 | 0.7 |
| Harrington | 69°F | 43°F | 3.68 | 0.2 |
| Harrold (12 mi SSW) | 69°F | 41°F | 2.73 | 0.0 |
| Hereford (12 mi SW) | 67°F | 43°F | 3.47 | 2.0 |
| Hoover | 67°F | 39°F | 3.10 | 0.9 |
| Kirley (6 mi N) | 69°F | 44°F | 3.26 | 0.5 |
| Ladner (9 mi SW) | 64°F | 41°F | 2.96 | 2.9 |
| Lake Sharpe Project | 71°F | 44°F | 3.15 | 0.0 |
| Lodgepole (5 mi SW) | 65°F | 36°F | 2.48 | – |
| Longvalley | 70°F | 44°F | 3.78 | – |
| Ludlow (3 mi SSE) | 65°F | 41°F | 2.97 | – |
| Manderson (3 mi NE) | 68°F | 43°F | – | – |
| Maurine (12 mi SW) | 68°F | 42°F | 3.34 | 1.2 |
| McIntosh (6 mi SE) | 69°F | 43°F | 2.44 | 0.6 |
| McLaughlin | 68°F | 42°F | 3.17 | 0.2 |
| Milesville (5 mi NE) | 70°F | 44°F | 3.33 | 0.7 |
| Mission Ridge (5 mi NW) | 68°F | 43°F | 2.67 | – |
| Mount Rushmore National Memorial | 60°F | 42°F | 4.80 | 1.5 |
| Oahe Dam | 70°F | 44°F | 3.17 | – |
| Pactola Dam | 60°F | 36°F | 4.26 | 4.5 |
| Pierre (24 mi S) | 68°F | 44°F | 3.13 | – |
| Plainview (6 mi SSW) | 68°F | 41°F | 3.19 | 0.9 |
| Porcupine (11 mi N) | 69°F | 42°F | 3.17 | – |
| Ralph (1 mi N) | 68°F | 40°F | 2.74 | – |
| Rauville (2 mi W) | 67°F | 45°F | 2.70 | 0.0 |
| Red Owl | 66°F | 41°F | 3.69 | 1.7 |
| Redig (11 mi NE) | 67°F | 41°F | 2.67 | 2.3 |
| Rochford (2 mi WNW) | 60°F | 31°F | – | – |
| Roy Lake | 67°F | 46°F | 3.15 | 0.2 |
| Shadehill Reservoir | 68°F | 41°F | – | – |
| Victor (4 mi N) | 68°F | 45°F | 3.07 | 0.0 |
| Wind Cave | 66°F | 41°F | 3.74 | 0.9 |
| Zeona (10 mi SSW) | 67°F | 41°F | – | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.